Locomotive draft appliance



vow. GFF RGUSON. LOCOMOTIVE DRAFTAPPLIA-NCE.

APPLICATION FILED MAR. 24, 1920.

- Patented Jan. 4, 1921.

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VON. G. FERGUSGN.

LOCOMOTWEDRAFT APPLIANCE.

'APPLicATmM men MAR. 24, 1920.

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VON G. FERGUSON; OF FAIEBURY, NEBRASKA.

LOCOMOTIVE DRAFT APPLIANCE.

Specification of Letters Patent.

Patented Jan. 4, 1921.

Application filed March 24, 1920. Serial No. 368,379.

T 0 all whom it may concern.

Be it knownthat 1, Von G. FnncUsoN, a citizen of the United States, residing at Fairbury. in the county of Jefferson and State of Nebraska, have invented certain new and useful Improvements in Locomot-ive Draft Appliances, of which the following is a specification.

This invention relates to means for creating a forced draft in locomotives and for preventing the emission of sparks.

The object of the invention is to provide a device of this character which is simple in construction having a small number of parts without detracting from the efliciency and durability thereof.

Another object is to provide an appliance of this character having improved draft regulating means.

\Vith the foregoing and other objects in View, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed may be made within the scope of what is claimed without departing from the spirit of the invention.

In the accompanying drawings:

Figure 1 represents a sectional View of the end of a locomotive taken through the smoke chamber with this improved device shown applied.

Fig. 2 is a top plan view of the draft appliance shown detached.

Fig. 3 is a bottom plan view thereof;

- Fig. 4 is a side elevation of theappliance detached with the casing door shown open.

Fig. 5 is a similar view of the stand pipe shown removed.

Fig. 6 is an enlarged detail sectional view through the stand pipe showing the means for adjustably connecting the damper thereto.

Fig. 7 is a transverse section taken on the line 77 of Fig. 5; and

Fig. 8 is a similar view taken on the line 8--8 of Fig. 5.

The device constituting this invention is shown applied to a locomotive boiler designated at A in Fig. 1 which may be of any ordinary construction and is provided at one end with the usual smoke chamber B with which connects the smoke stack C and an exhaust nozzle D. These parts may be of any well known construction and are illustrated simply to demonstrate the application of the invention.

A stand pipe 1 is located in the smoke chamber B and is connected at its lower end by a plate 15 with the exhaust nozzle D. This stand pipe 1 is in line with the smoke stack 0 and is centered by means of a hood 2- which is connected with the smoke stack or a part of the locomotive boiler in any suitable manner, apertured laterally extending lugs 3 being here shown for connecting it. This hood 2 has anapertured bottom 4 which receives the upper end of the stand pipe 1 and holds it in centered relation rela-- tive to the smoke stack. 1

The stand pipe 1 is provided at diametrically opposite points with two series of longitudinally alined apertures 5, for a purpose presently to be described. The lower end of the stand pipe is also provided with a series of peripheral apertures 6 to facilitate the draft. A vertically adjustable annular plate 7 is mounted on the stand pipe 1 and is designed to perform the function of a damper, since its purpose is to control the draft according to its relative position on the stand pipe and its distance from the lower or receiving end of the smoke stack. This annular plate or ring 7 has depending therefrom at diametrically opposite points two wedge-shaped members 8 the upper ends of which are inovably connected with the damper to permit them to swing toward and away from the stand pipe to provide for he engaging and disengaging from the apertures 5 of said pipe offingers 9 carried by the lower ends ofthe inner edges of the members 8 as is shown clearly in Fig. 6.

These wedge-shaped members 8 are each provided with a plurality of longitudinally spaced apertures 10 which are designed to receive cotter pins 11 adapted to be placed in one of said apertures above the locking plate 12 which is slidable on the stand pipe 1 of the members 8. This locking plate 12 as shown clearly in Fig. 7 is diamond-shaped in configuration but'obviously it may be of any other desired shape, the inner edges or walls of said plate being beveled to bindingly engage the wedge-shaped outer edges 8 of the members 8. as is shown clearly in Fig. 6. This plate 12 when placed in opera tive position and forced down over the mem- 'tion, such as smoke and gases.

bers 8 will securely hold said members with the fingers 9 engaged with diametrically opposite apertures 5 of the stand pipe and thereby secure the damper 7 in adjusted position. \Vhen it is desired to adjust the damper the ring 12 is raised to release the locking keys or wedges 8 which are swung outwardly a sufiicient distance to disengage their fingers 9 from the apertures in the stand pipe. The plate 7 may then be moved freely on the stand pipe 1 and after being placed in the desired position the members 8 will again move inwardly to bring the finger 9 into engagement with the apertures 5 and the plate 12 moved down over said members 8, and the cotter pins 11 placed in apertures 10 above plate 12 thereby securely locking the parts in adjusted position.

The bottom of the stand pipe has an aperture 13 therein designed to receive a pipe 14 which leads from a tank not shown containing compressed air so that when starting a fire in the locomotive compressed air may be discharged through the pipe 1 1 into the stand pipe, thereby creating a draft which will cause the fire to burn briskly at the outset.

A casing 16 is fitted about the stand pipe 1 and is-closed at its lower end and open at its upper end which upper end encircles the hood 2, as is shown clearly in Fig. 4:. This casing is of sectional formation and its bot tom and sides are perforated or meshed to provide for a ready passage of the products of combustion without permitting the escape of sparks and incandescent particles. The casing may be constructed of foraminous sheet metal or wire fabric provided the openings or meshes be of a size to prevent the passage of sparks without interfering with the escape of the products of combus- A door 19 closes the opening in the front of the casing 8 and provides for ready access to the interior of the casing for any purpose. As

. shown, this door 19 has hook-shaped fastening elements 20 at its free edge which are designed to pass from spaced lugs 21 carried by the casing and are held in closed position by keys 22 inserted in the hook members 20, as is shown clearly in Fig. 1.

From the foregoing description taken in connection with the accompanying drawings, the advantages of the construction and of the method of operation will be readily apparent to those skilled in the art to which the invention appertains and while I have described the principle of operation of the invention together with the device which I now consider to be the best embodiment thereof, I desire to have it understood that the device shown is merely illustrative and that such changes may be made as are Within the scope of the claimed invention.

Having thus fully described my invention,

what I claim as new and desire to secure by Letters Patent, is: 1. The combination with a locomotive boiler provided with an end smoke chamber, exhaust nozzle and smoke stack in cooperative relation with the smoke chamber, a stand pipe connected with the exhaust nozzle and having its upper end disposed to discharge into the smoke stack; of a damper ring mounted for vertical movement on said pipe and carrying radially swinging attaching elements and means for forcing said ele ments into locking engagement with said P p 2. The combination with a locomotive boiler provided with an end smoke chamber, exhaust nozzle and smoke stack in cooper.- ative relation with the smoke chamber, a stand pipe connected with the exhaust'nozzle and having its upper end disposed to discharge into the smoke stack; of a damper ring mounted for vertical movement on said pipe and carrying radially swinging attaching elements, and a ring slidable on said elements to force them into locking engagement with said pipe.

3. The combination with a locomotive boiler provided with an end smoke chamber, exhaust nozzle and smoke stack in cooperative relation with the smoke chamber, a stand pipe connected with the exhaust nozzle and having its upper end disposed to discharge into the smoke stack; ofa damper ring mounted for vertical movement on said pipe and carrying radially swinging-attaching elements, and a ring slidable on said elements to force them into locking engagement with said pipe, and means for insertion in said elements above said ring to hold the elements in engaged position.

4. The combination with a locomotive boiler provided with an end smoke chamber,

exhaust nozzle and smoke stack in cooperative relation with the smoke chamber, a stand pipe connected with the exhaust nozzle and having its upper end disposed to discharge into the smoke stack; of a damper ring mounted for vertical movement on said pipe and carrying radially swinging attaching elements, and a ring slidable on said elements to force them into locking engagement with said pipe, said elements having a plurality of longitudinally spaced apertures and keys for insertion in said apertures above said ring to hold the elements in engaged position.

5. A levice of the class described including a stand pipe having series of longitudinallv alined apertures, a damperring mounted to slide on said pipe, wedge-shaped plates depending from said ring and loosely connected therewith to permit them to swing toward and away from the pipe, each of said plates having a finger to enter one of the I apertures of said series, and means for forcing said elements into locking engagement with said pipe.

6. A device of the class described including a stand pipe having series of longitudinally alined apertures, a damper ring mounted to slide on said pipe, wedge-shaped plates depending from said ring and loosely connected therewith to permit them to swing toward and away from the pipe, each of said plates having a finger to enter one of the apertures of said series, and a plate slidable over said depending plates for forcing the fingers thereof into interlocking engagement with the apertures of said pipe.

7. A device of the class described including a stand pipe having series of longitudinally alined apertures, a damper ring mounted to slide on said pipe, wedge-shaped plates depending from said ring and loosely connected therewith to permit them to swing toward and away from the pipe, each of said plates having a finger to enter one of the apertures of said series, and a plate slidable over said depending plates for forcing the fingers thereof into interlocking engagement with the apertures of said pipe, and means" for locking said plate in operative position.

8. A device of the class described including a stand pipe having series of longitudinally alined apertures, a damper ring mounted to slide on said pipe, wedge-shaped plates depending from said ring and loosely connected therewith to permit them to swing toward and away from the pipe, each of said plates having a finger to enter one of the apertures of said series, and a plate slidable over said depending plates for forcing the fingers thereof into interlocking engagement with the apertures of said pipe, said depending plates having longitudinally spaced apertures to receive cotter pins for locking the slidable plate in adjusted position.

In testimony whereof I aflix my signature in presence of two witnesses.

VON G. FERGUSON. Vitnesses RAY RILEY, EVELYN R. J ONES. 

